Double Tables in Querrying Crystal Report

Code:

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SqlConnection conn = new SqlConnection(cVar.conString);
            conn.Open();
            SqlCommand comm = conn.CreateCommand();

            comm.CommandText = "SELECT * FROM tblData WHERE RACK_NO = '" + cboRackNo.Text + "' AND CALENDERED_DATE BETWEEN  '" + dtpFrom.Text + "' AND '" + dtpTo.Text + "' ORDER BY CALENDERED_DATE DESC";
            cVar.dataReader = comm.ExecuteReader();

            try
            {
                if (cVar.dataReader.HasRows)
                {
                    cVar.dataReader.Close();
                    SqlDataAdapter da = new SqlDataAdapter(comm);
                    DataTable dt = new DataTable();
                    da.Fill(dt);

                    crChart_Thickness cChart_Thickness = new crChart_Thickness();

cChart_Thickness.SetDataSource(dt);
                                       
                    frmPrintPreview fPrintPreview = new frmPrintPreview();

                    fPrintPreview.crystalReportViewer1.ReportSource = cChart_Thickness;
                    fPrintPreview.ShowDialog();

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above code will show the graph of the data in the given querry in tblData.
but i have also added the table name "tblStandard" which created directly in the crystal report "Running Total" by getting the MAX and MIN value. the line graph is like this: example below is a graph

1. MAX
2. Data
3. MIN

if i use only table no problem bu if use 2 tables it will ask for database password? my question is how could pass the database password both
tblData and tblStandard?

tnx

disregard my questions i just put the code after the creating new chart
and it works for the 2 tables.

Code:

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Database crDatabase = cChart_Thickness.Database;
                    Tables crTables = crDatabase.Tables;

                    ConnectionInfo crConnInfo = new ConnectionInfo();

                    crConnInfo.ServerName = ".\\SQLEXPRESS";
                    crConnInfo.DatabaseName = "database";
                    crConnInfo.UserID = "user";
                    crConnInfo.Password = "password";

                    foreach (Table crTable in crTables)
                    {
                        TableLogOnInfo crLogOnInfo = crTable.LogOnInfo;
                        crLogOnInfo.ConnectionInfo = crConnInfo;
                        crTable.ApplyLogOnInfo(crLogOnInfo);
                    }

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